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441538 (2008 SA308)
Classification: Main-belt Asteroid          SPK-ID: 2441538
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2173010011772919 5.4718e-08  
a 2.382175479102422 2.034e-08 au
q 1.86452636251347 1.2042e-07 au
i 3.064160501064329 5.142e-06 deg
node 163.9082922102335 7.8426e-05 deg
peri 173.9674406136498 8.0941e-05 deg
M 95.5420031910254 1.6268e-05 deg
tp 2458644.089168725822
(2019-Jun-09.58916873)
5.9353e-05 TDB
period 1342.947551582804
3.68
1.72e-05
4.709e-08
d
yr
n .2680670585948813 3.4333e-09 deg/d
Q 2.899824595691373 2.476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      8056 days (22.06 yr)  
   first obs. used      1997-11-08  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50904  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 22:51:57  

Additional Information
 Earth MOID = .855439 au 
 Jupiter MOID = 2.4925 au 
 T_jup = 3.503 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457738.5 (2016-Dec-16.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2185390611140495 5.472e-08  
q 1.860649288160602 1.2051e-07 au
tp 2457301.574991111765
(2015-Oct-06.07499111)
5.6525e-05 TDB
node 163.9577928652274 7.8363e-05 deg
peri 173.9157301793402 8.0836e-05 deg
i 3.065622177802485 5.1464e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      8056 days (22.06 yr)  
   first obs. used      1997-11-08  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50904  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 22:51:57  

Additional Information
 Jupiter MOID = 2.4925 au 
 T_jup = 3.503 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.994244455916611E-15 -6.562117449476696E-15 -5.498089821656803E-13 -1.846186051862781E-14 -1.416211802747688E-13 -4.880295859253968E-15
q -6.562117449476696E-15 1.452235594822914E-14 1.278164119848636E-12 4.378597386316138E-14 3.498482218827199E-13 1.075726312390974E-14
tp -5.498089821656803E-13 1.278164119848636E-12 3.195103777405477E-9 6.556073214803722E-11 1.131160666287276E-9 -1.479423830087541E-12
node -1.846186051862781E-14 4.378597386316138E-14 6.556073214803722E-11 6.140752214765545E-9 -6.106622490217742E-9 -6.922225502960167E-12
peri -1.416211802747688E-13 3.498482218827199E-13 1.131160666287276E-9 -6.106622490217742E-9 6.534499886933042E-9 6.272154167678763E-12
i -4.880295859253968E-15 1.075726312390974E-14 -1.479423830087541E-12 -6.922225502960167E-12 6.272154167678763E-12 2.648559483597081E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.7   n/a MPO446751  

441538 (2008 SA308)          Discovered 2008-Sep-29 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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